Indubitable and Uncertain

Indubitable

Indubitable adjective - Not capable of being challenged or proved wrong.
Usage example: the indubitable fact that there are no more woolly mammoths or saber-toothed tigers around

Uncertain is an antonym for indubitable.

Nearby Word: indubitably

Uncertain

Uncertain adjective - Likely to change frequently, suddenly, or unexpectedly.

Indubitable is an antonym for uncertain.

Nearby Words: uncertainty, uncertainly
Cite this Source
Uncertain and Indubitable. (2016). Retrieved 2026, July 22, from https://thesaurus.plus/related/indubitable/uncertain
Indubitable & Uncertain. N.p., 2016. Web. 22 Jul. 2026. <https://thesaurus.plus/related/indubitable/uncertain>.
Uncertain or Indubitable. 2016. Accessed July 22, 2026. https://thesaurus.plus/related/indubitable/uncertain.
Google Ngram Viewer shows how "indubitable" and "uncertain" have occurred on timeline